package com.utils;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;

import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

public class JdbcUtils {
    private static DruidDataSource dataSource;
    static {
        try {
            Properties properties = new Properties();
            //读取 jdbc.properties属性配置文件
            InputStream inputStream = JdbcUtils.class.getClassLoader().getResourceAsStream("jdbc.properties");
            // 从流中加载数据
            properties.load(inputStream);
            // 创建数据库连接池
            dataSource = (DruidDataSource) DruidDataSourceFactory.createDataSource(properties);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static Connection getConnection(){
        Connection conn= null;
        try {
            conn=dataSource.getConnection();
        }catch (Exception e){
            e.printStackTrace();
        }
        return conn;
    }
    public static void  close(Connection conn){
        if (conn!=null){
            try {
                conn.close();
            }catch (SQLException e){
                e.printStackTrace();
            }
        }
    }
}
